Captain José Antonio Ezequiel Carrillo (1796–1862) was a Californio rancher, officer, and politician in the early years of Mexican Alta California and U.S. California.
He was the son of the Spanish Criollo José Raimundo Carrillo, and brother of Carlos Antonio Carrillo, governor of Alta California, himself serving three non-consecutive terms as Comandante of Pueblo de Los Angeles - Mayor of Los Angeles between 1826 and 1834.
José Antonio Carillo married Estefana Pico (1806–) in 1823, and after her death, Jacinta Pico (1815–) in 1842; both women were sisters of prominent Californios Pío Pico and Andrés Pico. He built Carrillo House in Los Angeles, fronting the historic plaza, with wings extending back on Main Street.
José Antonio Carrillo was the Mexican land grant grantee of Rancho Las Posas in 1834, in present day Ventura County, California, and the Island of Santa Rosa of the Channel Islands.
Carrillo was alcalde of Los Angeles in 1826, 1828, and 1833. In 1836, Juan Bandini, a prominent political official who supported the American cause, was back in the revolution-making business - this time in opposition to Governor Juan Bautista Alvarado. Carrillo returned from his post as territorial congressman in Mexico with the news that his brother, Carlos, had been appointed governor of Alta California to replace Alvarado, and that the capital had been changed from Monterey to Los Angeles.